Tool for grinding or polishing heels



N0- 6|9, Patented Feb. 2|. I899.

L. T. ADAMS.

TOOL FOR GRINDING UR POLISHING .I'IEELS.

(Application filed mm 1, 1898.) (No Model.)

UNITED STATES PATENT ()FFICE.

LEWIS T. ADAMS, OF WHITMAN, MASSACHUSETTS.

TOOL FOR GRINDINGTOR POLISHING HEELS.

SPECIFICATION forming part of Letters Patent No. 619,921, dated February21, 1899.

Application filed June 1, 1898. Serial No. 682,242. (No model.)

To aZZ whom zit-may concern).-

Be it known that I, LEWIS T. ADAMS, of

Whitman, in the county of Plymouth and State of Massachusetts, haveinvented certain new and useful Improvements in Tools for Grinding orPolishing Heels, of which the following is a specification.

This invention has relation to tools or devices for grinding orpolishing plane surfaces, such as the faces of the heels of boots orshoes; and it has for its object the provision of a device of thischaracter having improved means for clamping the grinding or polishingmaterial across the face of the tool, whereby the said material isprevented from wrinkling and its usefulness is prolonged.

The invention is illustrated as embodied in a guiding-tool whoseoperative face is covered with felt, rubber, or other suitable material.The grinding, abrading, or polishing material-such as sandpaper, emery,cloth, or silesia-is cut in circular form and its edge is clampedbetween two telescoping rings, the rings being bodily adjustablerelatively to the tool, so as to draw the sandpaper or other materialtaut across the cushion.

Reference is to be had to the accompanying drawings, and to the lettersmarked thereon, forming a part of this specification, the same lettersdesignating the same parts or features, as the case may be, whereverthey occur.

Of the drawings, Figure 1 represents an edge view of a tool embodyingthe invention. Fig. 2 represents a section through the same with theclamping-rings open to receive the edge of a sheet of sandpaper. Fig. 3represents a similar view with the sandpaper drawn taut over the face ofthe tool. Fig. 4 represents a rear view of a portion of the tool.

In carrying out the invention I employ a tool consisting of a disk a,having a circumferential externally-threaded flange a. The disk iseither formed with an arbor a or else it is centrally apertured toreceive the end of a shaft or arbor. Upon its face the disk has a pad orcushion b, of felt, rubber, or any other desirable material which willfurnish a desirable backing for the abrading, grinding, or polishingmaterial. Upon the disk are screwed two telescoping rings 0 d, onethreaded into the other and adj ustable relatively thereto. One of therings 0 is tapering or inwardly beveled at its front end 0 and theother, d, has an inwardly-projecting lip d, which is beveled so as tocorrespond therewith, the two beveled surfaces forming clamping-jawswhich are continuous.

' The abrading, grinding, or polishing material e is out into circularform and is a little greater in diameter than the cushion or pad I), andits edge is inserted between the ends of the rings, after which theouter ring is screwed upon the inner one to bring their clamping edges,which are parallel in crosssection, tight against it. Then the two ringsare screwed upon the disk, back from the front face thereof, as shown inFig. 3, to draw the sheet 6 taut over the pad or cushion, the strainupon the said sheet being radial thereof, whereby it remains unwrinkledand smooth.

To hold thering a stationary while the ring (1 is being screwed thereon,it is provided with an internal socket 0 which may be brought toregister with an aperture a in the rim or flange of the disk, and a pina under the tension of a spring a is projected through the aperture intothe socket to lock the ring 0 and the disk together. To hold the pin outfrom the socket 0 there is a catch a, on the disk with which the springmay be engaged, as shown in Fig. 3.

When the clamping-rings are being adj usted relatively to the disk, thelatter or its arbor may be held in any suitable way against movement.

It will be noticed that the beveled clamp ing edges when viewed insection are substantially in or parallel to the lines of strain or thedirection of pull upon the sheet 6, so that there is no danger ofcracking or breaking it when drawing it taut.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, though without attempting to set forthall of the forms in which it may be made or all of the modes of its use,I declare that what I claim is- 1. A tool of the character describedcomprising a rotatable support, a sheet having an operative surface, andclamping devices supplemental to said support and having two continuouscoacting jaws for clamping the edge of the material between them,whereby it may be drawn taut over the face of the support.

2. A tool of the character described comprising a rotatable disk, asheet of material having an operative surface, and rings for clampingthe edge of the material between them, said rings being bodilyadjustable aXi ally of the said disk.

3. A tool of the character described comprising a rotatable disk whichis externally threaded, an internally-threaded ring screwed adj ustablyon the disk, and a clamp for clamping a sheet of grinding material onthe said ring.

4. A tool of the character described comprising a rotatableexternally-threaded disk, telescoping clamping-rings screwed on the saiddisk, and a sheet of material having its edge clamped between the saidring.

5. A tool of the character described com prising a rotatable disk andtwo clampingrings adjustable axially of said disk, said rings havingbeveled clamping edges for clamping the edge of a sheet of grinding,abrading or polishing material.

6. A tool of the character described comprising a rotatable disk, acushion or pad on the face of said disk, and two clamping-ringsadjustable relatively to each other, said rings being bodily adjustableaxially on the disk, and one having a tapering end, and the other aninwardly-projecting beveled lip or flange for clamping the edge of asheet of grinding, abrading or polishing material.

7. A tool of the character described comprising a rotatableexternally-threaded disk, two telescoping rings of which the inner oneis screwed on the disk and in the outer ring, said rings having coactingclamping edges, and devices for locking the inner ring to the said disk.

In testimony whereof I have aflixed my sig nature in presence of twowitnesses.

LEWIS T. ADAMS.

Witnesses:

ARTHUR D. B. BUTLER, ISAIAH T. CHURCHILL.

